Device for lubricating monotype keyboards



Aug. 27, 1946. A G. BAKAL I DEVICE FOR LUBRICATING MONOTYPE KEYBOARDS Filed Api'il 27-, 1945 2 Sheets-Sheet 1 INVENTOR. LEsL/E 6. BAKA L ATTORNEYS Aug. 27, 1946. B KAL 2,406,651 Y DEVICE FOR LUBRICATING MONO'IYPE KEYBOARDS Filed April 2'7, 1945 I 2 Sheets-Sheet 2 IN V ENTOR. 551.: 61 5AKA/ a? myzw@ 4 ATTORNEYS Patented Aug. 27, 1946 OFFICE DEVICE. FOR LUBRICATING. MQNOTYPE KEYBOARDS Leslie GLBakaI, Richmond, Va. Application April 27, 1945, Serial No.5.90, 608

6' Claims. (Cl. 184-55") My present invention, in its broad aspect, has referenceto improvements in lubricating and cleaning device for Monotype keyboards. My device is an atomizer. whereby suitable lightoil is sprayed into the parts, including. the keyboard, to coat/such parts with a thin film of oil sufficient: to properly lubricate the parts, and at the same time prevehtingrust, wear andsticking. My device is; also a cleaner, since it removes dust and the like, and; in itsaction, the tendency is to remove all moisture from the air. There are over seventy-five valves and pistons and other working parts in a Monotype keyboard, which must be completely or partially dismantled to complete a cleaning and oiling Operation. My invention attains both ends without dismantling and in addition, moisture is removed from the air. My device is designed to be hooked up with the Monotype air line and removes all dirt, dust and the like, which ordinarily passes through the air line. My device is simple, sturdy and practical, and is applicable to all conventional Monotype machines.

Other and equally important objects and advantages of my invention will be apparent from the following description and drawings, but it is pointed out that changes in form, size, shape, materials, and construction and arrangement of parts is permissible and within the purview of my broad inventive concept and the scope of the appended claims.

In the drawings, wherein I have illustrated a preferred form of my invention:

Figure 1 is a vertical elevation, partly broken away to show the parts of my device;

Figure 2 is a section on the line 22 of Figure 1;

Figure 3 is a section on the line 3-'3 of Figure 1;

Figure 4 is a top plan view, and

Figure 5 is a vertical section.

In the drawings, wherein like characters of reference are used to designate like or similar parts:

The numeral I designates the cylindrical oil container of my device, which is preferably formed of a thin sheet metal 2 and has a bottom 3 and an open top closed. by a cover 4. The top has an annular edge flange 5 beneath which is an annular reinforcing ring 6see Figure 2- and above which is an annular sealing gasket I. The cover 4 fits down on the gasket and screws 8 in spaced relationship about the edge of the cover-see Figure 4-pass through the cover, gasket, flange and reinforcing ring to hold the cover on the container in non-leakable assembly. The bottom has a drain cock 9 for removing dirt,

tainer is close to. the top of the tube.

water, and sediment fromv the oil container; It will be noted that the bottom is slightly convex. The filler tube. I 9 is located at the side ofthe container and has a connection II leading from its bottompart to the container. The height of light oil in the. tubev I il'indicates the height" of oil in the container, and the tube has a screw cap I2-see Figure 3'. As shown by the dot-and.- dash line in Figure 1, the level of oil in the con- A tubular connection I3 to an air line (preferably the air line of the Monotype machine) is on the opposite side of the container, and has a branch I4 leading into the container slightly above its middle point for atomizing purposes (as will hereinafter be described), and a slightly larger branch I5 leading into the container near the top. The branch I4 extends into the container and has an angled end I6, while the branch I5 merely extends through the Wall of the container. A valve I1 is located in the air line connection between the branches I4 and I5, so that air may be introduced into the container for oil atomizing purposes, or the air may be directed through the upper branch I5 and discharged directly through the outlet conduit I8 on the cover, which has a threaded end I9 for use of a flexible connection, or nozzle, or other attachment, if desired.

The oil atomizing tube 20 is a small tube extending at an angle down into the body of oil and having an angularl cut end 2| opposed to the end I6 of the branch [4. A rhomboidalshaped bracket 22 beneath the branch I4 sup-. ports the atomizing tube 29. On the end of the atomizing tube 20 is a cylindrical, screen paneled strainer 24. The construction of the strainer 24 incloses a cylindrical body 25 with a top and bottom and spaced elongated screened openings 26. Clips 21 attach the tube 20 to the bracket 22.

The Monotype keyboard is operated by air pressure of usually between 15 and 20 lbs. My device is inserted in the incoming air line at the most suitable place by connecting the airline to the connection I3. My device does not change the air pressure but merely mixes oil with the air as it passes through the device. This air then goes into the keyboard and operates the valves and pistons therein by means of the outlet I8, as the compressed air goes through my device a certain amount of oil is atomized and mixed with the air and as the air passes through the different parts of the keyboard they are lu bricated by the oil particles.

Valve I1 is to stop the device from operation if desired without the necessity of removing it from the air line such action be caused by the fact that branch l5 being larger than branch Id. The air would bypass branch l4 and follow the line of least resistance through branch l5, thus oil would not be mixed with the air passing therethrough.

Any supply of air under pressure may be used for connection l3 but it is easier to use the air line for operating the various parts of the machine and the use of the device is not limited to Monotype keyboards since it can be used with any mechanism operated by compressed air.

My device will remove dirt and moisture from the incoming air in the following manner, as the air under pressure enters branch I4 it passes over tube 20 which injects oil into the air. This mixture striking the side of the container leaving an oily film to which the particles of dust and moisture adhere. As the film slides down to the bottom of the container the dust particles and moisture may be drained therefrom by means of the drain cock 9.

From the foregoing, it is believed that the operation and construction, and advantages of my device will be apparent, but it is again emphasized that interpretation of the scope of my invention should only be conclusive when made in the light of the subjoined claims.

I claim:

1. A cleaner and atomizing oiler for Monotype keyboards, comprising a container for oil, a filler and oil level measuring tube at the side of the container, an air intake conduit at the other side of the container, spaced branches from the conduit into the container, a valve in the conduit between the branches, 2. screened atomizing tube in the oil of the container and associated with one of the branches, a cover on the container, and an outlet conduit on the cover.

2. The invention as defined in claim I wherein one branch is larger in diameter than the other and located adjacent the cover, and the smaller branch is associated with the atomizing tube.

3. The invention as defined in claim 1 wherein a bracket supports the atomizing tube, and the atomizing tube is smaller than the associated air branch.

4. The invention as defined in claim 1 wherein the screening device for the atomizing tube includes a cylindrical body with openings in the sides and screens near the openings.

5. The invention as defined in claim 1 wherein the filler tube is elongated and parallel with the containerand has a screw cap.

6. The invention as defined in claim 1 wherein the container has an annular top flange, a reinforcing ring below the flange, a seating gasket, the top seated on the gasket, and a plurality of attaching screws extending through the top flange, reinforcing ring,'gasket and cover.

LESLIE G. BAKAL. 

